Type of multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance

Abstract

A multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance includes a simulated roadway device, water spray based dust suppression device and nozzle position adjustor. The simulated roadway device includes an inlet portion, front divergent portion, simulated roadway body, rear convergent portion and outlet portion. The water spray based dust suppression device includes a dust generation and extraction system and spraying system. The dust generation and extraction system includes a dust generation device, exhaust air duct, exhaust fan and outlet air duct while the spraying system includes a water tank, high pressure water pump, confined water pipe, pressure water flow converter and multiple nozzles. The nozzle position adjustor includes a nozzle slide, slide fixing rod, nozzle sliding rack and electrically-controlled drive system which controls the change of horizontal position and vertical position of the nozzles.

What is claimed is: 
     
       1. A multi-nozzle combined atomizing dust suppression experimental equipment under an effect of airflow disturbance, wherein the equipment comprises a simulated roadway device, water spray based dust suppression device and nozzle position adjustor;
 the simulated roadway device comprises an inlet portion, front divergent portion, simulated roadway body, rear convergent portion and outlet portion; 
 the water spray based dust suppression device comprises a dust generation and extraction system and spraying system, 
 the dust generation and extraction system comprises a dust generation device, exhaust air duct, exhaust fan and outlet air duct, 
 the dust generation device is located at an inlet portion of the simulated roadway device, the inlet portion is connected to the atmosphere, one end of the exhaust air duct is connected to an outlet portion of the simulated roadway device and the other end of the exhaust air duct is connected to the outlet air duct via the exhaust fan; 
 the spraying system comprises a water tank, high pressure water pump, confined water pipe, pressure water flow converter and multiple nozzles, the water tank is connected via the high pressure water pump and confined water pipe to the pressure water flow converter which is connected with multiple nozzles; 
 the nozzle position adjustor comprises a nozzle slide, slide fixing rod, nozzle sliding rack and electrically-controlled drive system, every nozzle is mounted on the nozzle slide, 
 all nozzle slides are mounted on the slide fixing rod which is located on the nozzle sliding rack arranged inside the simulated roadway body, a vertical slideway is located on the nozzle sliding rack and a horizontal slideway is located under the nozzle sliding rack, 
 the electrically-controlled drive system comprises a horizontal drive system which controls horizontal position change of the nozzle sliding rack on the horizontal slideway and a vertical drive system which controls vertical position change of the slide fixing rod on the vertical slideway. 
 
     
     
       2. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 1 , wherein the simulated roadway device is made in such a way that a framework is made of aluminum alloy hollow tubes and then enclosed with organic glass. 
     
     
       3. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 1 , wherein the horizontal drive system comprises a first motor, a first drive gear, a first driven gear and horizontal slide belts, a rotating shaft of the first motor is connected with the first drive gear and the horizontal slide belts are placed onto the first drive gear and the first driven gear, the first motor drives the horizontal slide belts to move via the first drive gear and the horizontal slide belts are connected to the nozzle sliding rack via a first connector. 
     
     
       4. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 3 , wherein there are two horizontal slide belts arranged in parallel in total, each horizontal slide belt is provided with one first drive gear and one first driven gear and a drive rod is provided between the two first drive gears. 
     
     
       5. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 1 , wherein the vertical drive system comprises a second motor, a second drive gear, a second driven gear and a vertical slide belt, a rotating shaft of a second motor is connected with the second drive gear and the vertical slide belt is placed onto the second drive gear and the second driven gear, the second motor drives the vertical slide belt to move via the second drive gear and the vertical slide belt is connected via a second connector to the nozzle slide bar which is connected with the slide fixing rod. 
     
     
       6. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 5 , wherein two fixing blocks are provided at the bottom of the nozzle slide bar and fix the slide fixing rod, onto which said several nozzle slides are mounted, and the nozzle slides can move back and forth along the slide fixing rod under the effect of external push and pull forces. 
     
     
       7. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 1 , wherein 3 to 10 nozzle slides in total are provided on the slide fixing rod. 
     
     
       8. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 1 , wherein a water channel is provided inside the nozzle slide, one end of the water channel acts as the water inlet and the other end of the water channel is provided with connecting threads that match the nozzle. 
     
     
       9. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 2 , wherein the organic glass is 2 to 3 cm in thickness and the simulated roadway device is 3 m×2 m×2 m in L×W×H. 
     
     
       10. The multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance according to  claim 1 , wherein the water tank is 1-1.5 m 3  in capacity; the high pressure water pump has a water pressure adjusting range from 0.5 MPa to 10 MPa; the dust generation device is configured to generate dust with particle sizes of 0.5-100 μm and has a dust yield of 10-50 g/s; the exhaust fan achieves stepless variable frequency regulation and has an air volume range from 0 m 3 /min to 1000 m 3 /min.